GU24 3-way dimmer knob-type switch lampholder

Abstract

A GU24 3-way dimmer knob-type switch lamp holder is disclosed, where the body of the lamp holder is provided with three contact plates at the two sides of its interior and on its bottom. And an insulating rotor and a rotor conducting plate therein is driven by a knob. The rotor conducting plate is shaped into four portions along its rim, where three of them come with a shaped contact plate, while the fourth is void. The insulating rotor and the rotor conducting plate are driven to rotate by turning the knob, which enables three contact plates in the body and three contact plates of the rotor conducting plate to form no conduction or different conduction modes that enable various levels of illumination: dim, moderate and high brightness after power ON and feature power OFF as well.

1. A GU24 3-way dimmer knob-type switch lamp holder, comprising: a body, having a joining surface at its bottom, where the joining surface is provided with a set of guiding troughs to be inserted firmly by conducting poles of the GU24, and having a circular through trough at its center and a broadened shallow trench connected for the positioning purpose, the body being provided with a plurality of lodging troughs for lodging an anode clasping plate, an electrode clasping plate, a first conducting plate, an electrode conducting plate, a second conducting plate, a rotor conducting plate, a third conducting plate and an insulating rotor, where the rotor conducting plate forms a cavity by a side wall and a curved wall, the curved wall being divided into four parts, where three of them are arranged in the form of ratchets, which are shaped orderly into a first contact plate, a second contact plate and a third contact plate, and the forth part being void, the insulating rotor being accommodated in the cavity of the rotor conducting plate in a firm combination, where its outer wall is arranged in the form of ratchets which are shaped into a first ratchet, a second ratchet, a third ratchet and a fourth ratchet, where the first ratchet, the second ratchet and the third ratchet correspond to the first contact plate, the second contact plate and the third contact plate respectively, and the fourth ratchet corresponds to the gaping void, the anode clasping plate being provided with a contact plate that joins the curved wall of the rotor conducting plate, while the electrode clasping plate joins the electrode conducting plate, one end of the electrode conducting plate being shaped into a curved joining portion, which is placed inside a guiding trough during the assembly, the first conducting plate being provided with a contact plate that joins the curved wall of the rotor conducting plate, and the first conducting plate joining the second conducting plate, one end of the second conducting plate being shaped into a curved joining portion, which is placed inside another guiding trough during the assembly, the third conducting plate being provided with a contact plate that joins the curved wall of the rotor conducting plate, and the third conducting plate being connected fixedly to the circular trough by means of a linking piece, where the linking piece joins a contact plate for the conduction purpose on the joining surface, to have the contact plate positioned in the shallow trench, the body being provided with a slot at its one side and with a fastening hole at each of two sides of the interior, a driving shaft being connected to the center of the insulating rotor with its one end for a firm combination, while the other end of the shaft to a knob, and the driving shaft being placed in the slot during the assembly;
 a fixing member, having two opposite portions on its rim protruded into forming clamping hooks, being provided with a set of through holes and a set of cord holes at its top surface, the fixing member being to put on top of the body, and a set of fastening articles being used to penetrate the set of through holes respectively and being joined to the corresponding fastening holes of the body; and 
 a top cover, having a clamping trough at each of the two sides of its outer wall corresponding to the clamping hook of the fixing member, once the top cover is placed right on top of the body with the fixing member in position, the clamping hooks being inserted for clamping by the corresponding clamping troughs, the top cover being provided with a connecting hole for joining with a supporting lamp frame and for the passing through by the power cord; 
 when in use, through the turning of the knob, the driving shaft being able to drive the insulating rotor to rotate synchronously with the rotor conducting plate, which alters the relative contacts between the four portions of the rotor conducting plate: first contact plate, the second contact plate, the third contact plate and the void and the three objects: the contact plate of the anode clasping plate, the contact plate of the first conducting plate and the contact plate of the third conducting plate, the joining portion in the guiding trough of the joining surface of the body and the contact plate joined with the linking piece work together with the lamp to feature the adjustment of the light into three states of illumination: dim, moderate, and high brightness and power OFF. 
 
     
     
       2. A GU24 3-way dimmer knob-type switch lamp holder as in  claim 1  where the lamp holder is used together with the GU24 3-way energy saving fluorescent lamp, and the energy saving fluorescent lamp having a cap on its top and an internal chamber for the accommodation of a circuit control device, the cap having a set of conducting poles in rivet connection on its top and a conducting head near the center of the top, and the bottom of the conducting head being supported by an elastic member corresponding to the contact plate of the lamp holder, the conducting poles and the conducting head each being electrically connected to the circuit control device at its bottom portion, the cap being mounted with a fluorescent tube, the circuit control device being provided with two closed loops with different luminance, once the energy saving fluorescent lamp being mounted in the lamp holder, users being able to adjust the luminance of the energy saving fluorescent lamp into low, moderate, high brightness and an OFF state only by turning the knob.